It is not about the value of concession but how she asked it. She threatened on a lot of things that should earn her the VDL treatment but not only did that not happen she earned a official promise. Even though China made it clear weapon deal between two sovriegn nation is none of their god damn business.I don't know why you read too much into what Chinese FM said in that statement. It has been China's position that it won't sell weapons to both Russia or Ukraine during this conflict. Western MSM has tried to corner China on this issue but with no available. Beside, Russia doesn't need Chinese weapons unless it wants to mobilize million of troops. With dual uses component from China, Russia is capable of sustaining the war with its own defense industry.
In addition, China is also sending its DM to Russia for a meeting for further cooperation. With meeting with Lula underway now and other countries' leaders in the coming weeks and months to draw a roadmap of de-dollarization, I think China would lay low a bit but push for military and economic engagement. BRICS and SCO would see a big push from China to fight back the West. Belt Road would revitalize and weaponize towards same goal.
Just what did she do that earned so much respect both in level of reception and diplomatic gurantee? I wish there are something we dont know that happened. If we took everything at surface level it would be a disaster.